40444840 has 32 divisors (see below), whose sum is σ = 92160000. Its totient is φ = 15971904.

The previous prime is 40444799. The next prime is 40444843. The reversal of 40444840 is 4844404.

It is a junction number, because it is equal to n+sod(n) for n = 40444799 and 40444808.

It is not an unprimeable number, because it can be changed into a prime (40444843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3240 + ... + 9559.

It is an arithmetic number, because the mean of its divisors is an integer number (2880000).

Almost surely, 2^40444840 is an apocalyptic number.

40444840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40444840 is an abundant number, since it is smaller than the sum of its proper divisors (51715160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40444840 is a wasteful number, since it uses less digits than its factorization.

40444840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12889 (or 12885 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 28.

The square root of 40444840 is about 6359.6257751538. The cubic root of 40444840 is about 343.2582946784.

The spelling of 40444840 in words is "forty million, four hundred forty-four thousand, eight hundred forty".